Download or read book Roof Control Strategies for Underground Coal Mines written by William Cyrille Smith and published by . This book was released on 1993 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Survey of Practices in Controlling Roof at Intersections and Junctions in Underground Coal Mines written by R. Ward Stahl and published by . This book was released on 1962 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coal Mine Ground Control written by Syd S. Peng and published by Wiley-Interscience. This book was released on 1986 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: This revision of the standard reference in the field has been updated to reflect the enormous progress made in the sciences of coal mine ground control. Many chapters are completely new and virtually all have been substantially rewritten. The book covers common ground control problems underground, rock properties and in situ stresses, geological effects and roof stability classification and investigation, roof bolting, coal pillars, ground control in longwall mining and multiple-seam mining, bumps, instrumentation, special supports and problems and surface subsidence.

Download or read book Proceedings New Technology for Coal Mine Roof Support written by and published by . This book was released on 2000 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1994 with total page 1828 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1982 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geologic Hazards and Roof Stability in Coal Mines written by Gregory M. Molinda and published by . This book was released on 2003 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coal Mine Roof Instability written by Noel N. Moebs and published by . This book was released on 1986 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Underground Mine Roof Control written by and published by . This book was released on 1986 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coal Mine Ground Control written by Marcel Talbot and published by . This book was released on 2016-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of coal mining is to obtain coal from the ground. Coal is valued for its energy content, and, since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. Coal mining has had many developments over the recent years, from the early days of men tunneling, digging and manually extracting the coal on carts, to large open cut and long wall mines. Mining at this scale requires the use of draglines, trucks, conveyors, jacks and shearers. The most economical method of coal extraction from coal seams depends on the depth and quality of the seams, and the geology and environmental factors. Coal mining processes are differentiated by whether they operate on the surface or underground. Surface mining and deep underground mining are the two basic methods of mining. The choice of mining method depends primarily on depth of burial, density of the overburden and thickness of the coal seam. Seams relatively close to the surface, at depths less than approximately 180 ft (50 m), are usually surface mined. Coal that occurs at depths of 180 to 300 ft (50 to 100 m) is usually deep mined, but in some cases surface mining techniques can be used. Most coal seams are too deep underground for opencast mining and require underground mining, a method that currently accounts for about 60 percent of world coal production. This book entitled Coal Mine Ground Control covers every major topic concerned with ground control in underground coal mines, with emphasis on the application of various ground control theories and techniques. The book reviews current general practices in underground mine layouts, roof control, and common ground control failures, and the discussion of the state-of-the-art of coal mine ground control technology. The book will also prove useful to practical engineers involved in either the design or the day-to-day operations of underground coal mines.

Download or read book Roof Control of Stress relief Jointing Near Outcrops in Central Appalachian Drift Coal Mines written by Gary P. Sames and published by . This book was released on 1992 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design Optimization in Underground Coal Systems Underground longwall ground control simulator written by and published by . This book was released on 1981 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coal Mine Roof Rating CMRR written by Gregory M. Molinda and published by . This book was released on 1994 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bureau of Mines Publications and Articles with Subject and Author Index written by United States. Bureau of Mines and published by . This book was released on 1994 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book List of Bureau of Mines Publications and Articles with Subject and Author Index written by United States. Bureau of Mines and published by . This book was released on 1994 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Publications written by United States. Bureau of Mines and published by . This book was released on 1982 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coal written by National Research Council and published by National Academies Press. This book was released on 2007-12-21 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal will continue to provide a major portion of energy requirements in the United States for at least the next several decades. It is imperative that accurate information describing the amount, location, and quality of the coal resources and reserves be available to fulfill energy needs. It is also important that the United States extract its coal resources efficiently, safely, and in an environmentally responsible manner. A renewed focus on federal support for coal-related research, coordinated across agencies and with the active participation of the states and industrial sector, is a critical element for each of these requirements. Coal focuses on the research and development needs and priorities in the areas of coal resource and reserve assessments, coal mining and processing, transportation of coal and coal products, and coal utilization.